Seismograph Comparison During BART Tube Monitoring

A recent study compared three different seismograph systems used to measure vibrations during underwater pier demolition beneath the BART Transbay Tube in San Francisco. The research analyzed how each system captured peak amplitudes and frequencies of vibrations caused by the blast and passing trains, revealing significant differences based on sample rates and resolution.

The high-resolution Nomis Supergraph II, with a rate of 16,384 Hz, recorded the highest peak velocities and frequencies, demonstrating the importance of sampling rate for accurate measurement. The study highlights how advanced seismographs can better capture high-frequency events, supporting safer and more precise demolition activities.

Want the full insights? Download the PDF and see how different seismograph systems compare in critical monitoring scenarios!